Fire-proof chimney-tube



(No Model.)

J. SGHINDLER. FIRE PROOF CHIMNEY TUBE.

No. 433,042. Patented July 29, 1890.

UNITED STATES PATENT OFFICE.

J OIIN SCHINDLER, OF BRIDGEPORT, CONNECTICUT.

FIRE-PROOF CHIMNEY-TUBE.

SPECIFICATION forming part of Letters Patent No. 433,042, dated July 29,1890.

Application filed March 3, 1890. Serial No. 34.2, l66. (No model.)

To on whom it may concern:

zen of the United States, residing at Bridgeport, in the county ofFairfield and State of Connecticut, have invented certain new and usefulImprovements in Fire-Proof Chimney- Tubes; and I do hereby declare thefollowing to be afull, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention has for its object to produce a chimney-tube which may beused in any ordinary position in building-for example, where it isdesired to carry a stove pipe through wood-work into a chimney or whereit is desired to run a pipe through a closet before it can reach thechimney-said tube being so constructed that when used in a chimney oneend of it will be built into the brickwork thereof and the other endwill be cov- V ered by the plaster, but which shall be so constructed asto keep the lathing and all other wood-work at a distance from any metalpipe,

and which, moreover, shall be made so strong held firmly together, sothat should sparks escape from the ordinary metal stove-pipe beforereaching the chimney it shall be impossible for them to get through thetube and come in contact with any of the wood-work.

My novel chimney-tube may of course be made of any suitable material,the material itself not being of the essence of my invention. I have inpractice made them from different kinds of clay and also from cement.

In the accompanying drawings, forming part of this specification, Figure1 is a section of a chimney and the lathiug and plastering of a room,showing one of the studs and also my novel chimney-tube in elevation.Fig. 2 is a view of the wall with an ordinary metallic sleeve in place,showingin dotted lines the position of the outer end of my novelchimney-tube and also the position of the laths; Fig. 3, a longitudinalsection of one of my novel tubes with a metallic sleeve therein; Fig. 4,a transverse section thereof, and Fig.

" 5 a front elevation of a section of chimneytube provided withcouplingears.

1 denotes thebrick-work; 2,astud; 3,1aths; 4., plastering; 5, asheet-iron sleeve, which is commonly used at present and which Ipreferably use at the outer end of the tube, and 6 is my novelchimneytube. The inner end of this tube I preferably make square, asshown in the drawings, so that it maybe built solidly into thebrick-work of the chimney, and at the outer end I provide a thick hGZNYflange 7. It will be noticed (see Figs. 1 and 2) that this flange ismade sufficiently wide so that in practice it will be impossible for thelaths to come within two or three inches of the stove-pipe or metalsleeve. If preferred, the flange of the tube may be brought to the outerside. I preferably, however, plaster over the face of the tube, asclearly shown in Figs. 1 and 2, and simply have the outer flanged end ofthe metallic sleeve 5 show at the front, as shown both in Figs. 1 and 2.

In order to prevent the possibility of the tube breaking and the partsbecoming separated under strain from any direction, no matter whethervertical, lateral, or longitudinal, I provide a series of circularmetallic ties or bands (denoted by 12) and a series of longitudinal tiesor strengtheningstrips, (denoted by 13.) These ties, bands, or stripsare molded into the tubes in the process of making and form an integralpart thereof. In practice they give the greatest possible amount ofstrength to resist strain from all directions, so that even should thetube become cracked by settling at either end, or from any causewhatever, the pieces cannot be separated. My novel tube is, therefore,under all circumstances absolutely fire-proof and safe. The circularbands may be made in separate pieces with the ends attached together, orthey may be placed in the molds in spiral form, if preferred. I makethese tubes of various ordinary lengths to meet the common requirementsof house-building. They can .be specially made, when required of anyunusual length, at very slight expense.

I am aware that a Stovepipe thimble made square at one end to adapt itto be built into a chimney is old, and I am also aware that it is old toprovide earthenware pipes with metallic strengthening rings and sleeves,andtherein, and I do .not, therefore, claim any of these features,broadly.

Having thus described my invention, I claim 1. A fire-proof chimney-tubemade of plastic material and having molded therein 1ongitndinal andcircular metallic ties or strips, the said tube being square at one endto adapt it to be built into a chimney and having at its opposite end aheavy flange to be inter-- posedbetween thewood-work and a stove-pipe.

' 2. A fire-proof chimney-tube made of plastic material and havingmolded therein lon-

